I have found my older dog likes being the leader, so I watch the way they interact. I give my older dog everything he is used to getting first and let the little one observe, so far the young one has assimilated well in our home and has established his position in the pack. He has learned a lot just from watching my older dog Levi. It is amazing how they mentor their own when allowed to do so, with guidance from their human family. Give equally and project confidence they will pick up on it and follow suit.